Ответ:

1) (x,y), (2,1). 2) (x,y), (2, -2) 3) (x,y), (2,1) 4) (x,y), (2,3)

номер 175. 1) (x,y), (5,-2) 2) (x,y),(1, -1/3) 3) (x,y),(-6/35,5/7)

4) (x,y),(3/2, -1) 5) (x,y),(8,2) 6) (x,y),(13/2,-3)